// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ******************************************************************************* * Copyright (C) 1996-2015, International Business Machines Corporation and * others. All Rights Reserved. ******************************************************************************* */ #ifndef UCAL_H #define UCAL_H #include "unicode/utypes.h" #include "unicode/uenum.h" #include "unicode/uloc.h" #include "unicode/localpointer.h" #if !UCONFIG_NO_FORMATTING /** * \file * \brief C API: Calendar * * <h2>Calendar C API</h2> * * UCalendar C API is used for converting between a <code>UDate</code> object * and a set of integer fields such as <code>UCAL_YEAR</code>, <code>UCAL_MONTH</code>, * <code>UCAL_DAY</code>, <code>UCAL_HOUR</code>, and so on. * (A <code>UDate</code> object represents a specific instant in * time with millisecond precision. See UDate * for information about the <code>UDate</code> .) * * <p> * Types of <code>UCalendar</code> interpret a <code>UDate</code> * according to the rules of a specific calendar system. The U_STABLE * provides the enum UCalendarType with UCAL_TRADITIONAL and * UCAL_GREGORIAN. * <p> * Like other locale-sensitive C API, calendar API provides a * function, <code>ucal_open()</code>, which returns a pointer to * <code>UCalendar</code> whose time fields have been initialized * with the current date and time. We need to specify the type of * calendar to be opened and the timezoneId. * \htmlonly<blockquote>\endhtmlonly * <pre> * \code * UCalendar *caldef; * UChar *tzId; * UErrorCode status; * tzId=(UChar*)malloc(sizeof(UChar) * (strlen("PST") +1) ); * u_uastrcpy(tzId, "PST"); * caldef=ucal_open(tzID, u_strlen(tzID), NULL, UCAL_TRADITIONAL, &status); * \endcode * </pre> * \htmlonly</blockquote>\endhtmlonly * * <p> * A <code>UCalendar</code> object can produce all the time field values * needed to implement the date-time formatting for a particular language * and calendar style (for example, Japanese-Gregorian, Japanese-Traditional). * * <p> * When computing a <code>UDate</code> from time fields, two special circumstances * may arise: there may be insufficient information to compute the * <code>UDate</code> (such as only year and month but no day in the month), * or there may be inconsistent information (such as "Tuesday, July 15, 1996" * -- July 15, 1996 is actually a Monday). * * <p> * <strong>Insufficient information.</strong> The calendar will use default * information to specify the missing fields. This may vary by calendar; for * the Gregorian calendar, the default for a field is the same as that of the * start of the epoch: i.e., UCAL_YEAR = 1970, UCAL_MONTH = JANUARY, UCAL_DATE = 1, etc. * * <p> * <strong>Inconsistent information.</strong> If fields conflict, the calendar * will give preference to fields set more recently. For example, when * determining the day, the calendar will look for one of the following * combinations of fields. The most recent combination, as determined by the * most recently set single field, will be used. * * \htmlonly<blockquote>\endhtmlonly * <pre> * \code * UCAL_MONTH + UCAL_DAY_OF_MONTH * UCAL_MONTH + UCAL_WEEK_OF_MONTH + UCAL_DAY_OF_WEEK * UCAL_MONTH + UCAL_DAY_OF_WEEK_IN_MONTH + UCAL_DAY_OF_WEEK * UCAL_DAY_OF_YEAR * UCAL_DAY_OF_WEEK + UCAL_WEEK_OF_YEAR * \endcode * </pre> * \htmlonly</blockquote>\endhtmlonly * * For the time of day: * * \htmlonly<blockquote>\endhtmlonly * <pre> * \code * UCAL_HOUR_OF_DAY * UCAL_AM_PM + UCAL_HOUR * \endcode * </pre> * \htmlonly</blockquote>\endhtmlonly * * <p> * <strong>Note:</strong> for some non-Gregorian calendars, different * fields may be necessary for complete disambiguation. For example, a full * specification of the historical Arabic astronomical calendar requires year, * month, day-of-month <em>and</em> day-of-week in some cases. * * <p> * <strong>Note:</strong> There are certain possible ambiguities in * interpretation of certain singular times, which are resolved in the * following ways: * <ol> * <li> 24:00:00 "belongs" to the following day. That is, * 23:59 on Dec 31, 1969 < 24:00 on Jan 1, 1970 < 24:01:00 on Jan 1, 1970 * * <li> Although historically not precise, midnight also belongs to "am", * and noon belongs to "pm", so on the same day, * 12:00 am (midnight) < 12:01 am, and 12:00 pm (noon) < 12:01 pm * </ol> * * <p> * The date or time format strings are not part of the definition of a * calendar, as those must be modifiable or overridable by the user at * runtime. Use {@link icu::DateFormat} * to format dates. * * <p> * <code>Calendar</code> provides an API for field "rolling", where fields * can be incremented or decremented, but wrap around. For example, rolling the * month up in the date <code>December 12, <b>1996</b></code> results in * <code>January 12, <b>1996</b></code>. * * <p> * <code>Calendar</code> also provides a date arithmetic function for * adding the specified (signed) amount of time to a particular time field. * For example, subtracting 5 days from the date <code>September 12, 1996</code> * results in <code>September 7, 1996</code>. * * <p> * The Japanese calendar uses a combination of era name and year number. * When an emperor of Japan abdicates and a new emperor ascends the throne, * a new era is declared and year number is reset to 1. Even if the date of * abdication is scheduled ahead of time, the new era name might not be * announced until just before the date. In such case, ICU4C may include * a start date of future era without actual era name, but not enabled * by default. ICU4C users who want to test the behavior of the future era * can enable the tentative era by: * <ul> * <li>Environment variable <code>ICU_ENABLE_TENTATIVE_ERA=true</code>.</li> * </ul> * * @stable ICU 2.0 */ /** * The time zone ID reserved for unknown time zone. * It behaves like the GMT/UTC time zone but has the special ID "Etc/Unknown". * @stable ICU 4.8 */ #define UCAL_UNKNOWN_ZONE_ID "Etc/Unknown" /** A calendar. * For usage in C programs. * @stable ICU 2.0 */ typedef void* UCalendar; /** Possible types of UCalendars * @stable ICU 2.0 */ enum UCalendarType { /** * Despite the name, UCAL_TRADITIONAL designates the locale's default calendar, * which may be the Gregorian calendar or some other calendar. * @stable ICU 2.0 */ UCAL_TRADITIONAL, /** * A better name for UCAL_TRADITIONAL. * @stable ICU 4.2 */ UCAL_DEFAULT = UCAL_TRADITIONAL, /** * Unambiguously designates the Gregorian calendar for the locale. * @stable ICU 2.0 */ UCAL_GREGORIAN }; /** @stable ICU 2.0 */ typedef enum UCalendarType UCalendarType; /** Possible fields in a UCalendar * @stable ICU 2.0 */ enum UCalendarDateFields { /** * Field number indicating the era, e.g., AD or BC in the Gregorian (Julian) calendar. * This is a calendar-specific value. * @stable ICU 2.6 */ UCAL_ERA, /** * Field number indicating the year. This is a calendar-specific value. * @stable ICU 2.6 */ UCAL_YEAR, /** * Field number indicating the month. This is a calendar-specific value. * The first month of the year is * <code>JANUARY</code>; the last depends on the number of months in a year. * @see #UCAL_JANUARY * @see #UCAL_FEBRUARY * @see #UCAL_MARCH * @see #UCAL_APRIL * @see #UCAL_MAY * @see #UCAL_JUNE * @see #UCAL_JULY * @see #UCAL_AUGUST * @see #UCAL_SEPTEMBER * @see #UCAL_OCTOBER * @see #UCAL_NOVEMBER * @see #UCAL_DECEMBER * @see #UCAL_UNDECIMBER * @stable ICU 2.6 */ UCAL_MONTH, /** * Field number indicating the * week number within the current year. The first week of the year, as * defined by <code>UCAL_FIRST_DAY_OF_WEEK</code> and <code>UCAL_MINIMAL_DAYS_IN_FIRST_WEEK</code> * attributes, has value 1. Subclasses define * the value of <code>UCAL_WEEK_OF_YEAR</code> for days before the first week of * the year. * @see ucal_getAttribute * @see ucal_setAttribute * @stable ICU 2.6 */ UCAL_WEEK_OF_YEAR, /** * Field number indicating the * week number within the current month. The first week of the month, as * defined by <code>UCAL_FIRST_DAY_OF_WEEK</code> and <code>UCAL_MINIMAL_DAYS_IN_FIRST_WEEK</code> * attributes, has value 1. Subclasses define * the value of <code>WEEK_OF_MONTH</code> for days before the first week of * the month. * @see ucal_getAttribute * @see ucal_setAttribute * @see #UCAL_FIRST_DAY_OF_WEEK * @see #UCAL_MINIMAL_DAYS_IN_FIRST_WEEK * @stable ICU 2.6 */ UCAL_WEEK_OF_MONTH, /** * Field number indicating the * day of the month. This is a synonym for <code>DAY_OF_MONTH</code>. * The first day of the month has value 1. * @see #UCAL_DAY_OF_MONTH * @stable ICU 2.6 */ UCAL_DATE, /** * Field number indicating the day * number within the current year. The first day of the year has value 1. * @stable ICU 2.6 */ UCAL_DAY_OF_YEAR, /** * Field number indicating the day * of the week. This field takes values <code>SUNDAY</code>, * <code>MONDAY</code>, <code>TUESDAY</code>, <code>WEDNESDAY</code>, * <code>THURSDAY</code>, <code>FRIDAY</code>, and <code>SATURDAY</code>. * @see #UCAL_SUNDAY * @see #UCAL_MONDAY * @see #UCAL_TUESDAY * @see #UCAL_WEDNESDAY * @see #UCAL_THURSDAY * @see #UCAL_FRIDAY * @see #UCAL_SATURDAY * @stable ICU 2.6 */ UCAL_DAY_OF_WEEK, /** * Field number indicating the * ordinal number of the day of the week within the current month. Together * with the <code>DAY_OF_WEEK</code> field, this uniquely specifies a day * within a month. Unlike <code>WEEK_OF_MONTH</code> and * <code>WEEK_OF_YEAR</code>, this field's value does <em>not</em> depend on * <code>getFirstDayOfWeek()</code> or * <code>getMinimalDaysInFirstWeek()</code>. <code>DAY_OF_MONTH 1</code> * through <code>7</code> always correspond to <code>DAY_OF_WEEK_IN_MONTH * 1</code>; <code>8</code> through <code>15</code> correspond to * <code>DAY_OF_WEEK_IN_MONTH 2</code>, and so on. * <code>DAY_OF_WEEK_IN_MONTH 0</code> indicates the week before * <code>DAY_OF_WEEK_IN_MONTH 1</code>. Negative values count back from the * end of the month, so the last Sunday of a month is specified as * <code>DAY_OF_WEEK = SUNDAY, DAY_OF_WEEK_IN_MONTH = -1</code>. Because * negative values count backward they will usually be aligned differently * within the month than positive values. For example, if a month has 31 * days, <code>DAY_OF_WEEK_IN_MONTH -1</code> will overlap * <code>DAY_OF_WEEK_IN_MONTH 5</code> and the end of <code>4</code>. * @see #UCAL_DAY_OF_WEEK * @see #UCAL_WEEK_OF_MONTH * @stable ICU 2.6 */ UCAL_DAY_OF_WEEK_IN_MONTH, /** * Field number indicating * whether the <code>HOUR</code> is before or after noon. * E.g., at 10:04:15.250 PM the <code>AM_PM</code> is <code>PM</code>. * @see #UCAL_AM * @see #UCAL_PM * @see #UCAL_HOUR * @stable ICU 2.6 */ UCAL_AM_PM, /** * Field number indicating the * hour of the morning or afternoon. <code>HOUR</code> is used for the 12-hour * clock. * E.g., at 10:04:15.250 PM the <code>HOUR</code> is 10. * @see #UCAL_AM_PM * @see #UCAL_HOUR_OF_DAY * @stable ICU 2.6 */ UCAL_HOUR, /** * Field number indicating the * hour of the day. <code>HOUR_OF_DAY</code> is used for the 24-hour clock. * E.g., at 10:04:15.250 PM the <code>HOUR_OF_DAY</code> is 22. * @see #UCAL_HOUR * @stable ICU 2.6 */ UCAL_HOUR_OF_DAY, /** * Field number indicating the * minute within the hour. * E.g., at 10:04:15.250 PM the <code>UCAL_MINUTE</code> is 4. * @stable ICU 2.6 */ UCAL_MINUTE, /** * Field number indicating the * second within the minute. * E.g., at 10:04:15.250 PM the <code>UCAL_SECOND</code> is 15. * @stable ICU 2.6 */ UCAL_SECOND, /** * Field number indicating the * millisecond within the second. * E.g., at 10:04:15.250 PM the <code>UCAL_MILLISECOND</code> is 250. * @stable ICU 2.6 */ UCAL_MILLISECOND, /** * Field number indicating the * raw offset from GMT in milliseconds. * @stable ICU 2.6 */ UCAL_ZONE_OFFSET, /** * Field number indicating the * daylight savings offset in milliseconds. * @stable ICU 2.6 */ UCAL_DST_OFFSET, /** * Field number * indicating the extended year corresponding to the * <code>UCAL_WEEK_OF_YEAR</code> field. This may be one greater or less * than the value of <code>UCAL_EXTENDED_YEAR</code>. * @stable ICU 2.6 */ UCAL_YEAR_WOY, /** * Field number * indicating the localized day of week. This will be a value from 1 * to 7 inclusive, with 1 being the localized first day of the week. * @stable ICU 2.6 */ UCAL_DOW_LOCAL, /** * Year of this calendar system, encompassing all supra-year fields. For example, * in Gregorian/Julian calendars, positive Extended Year values indicate years AD, * 1 BC = 0 extended, 2 BC = -1 extended, and so on. * @stable ICU 2.8 */ UCAL_EXTENDED_YEAR, /** * Field number * indicating the modified Julian day number. This is different from * the conventional Julian day number in two regards. First, it * demarcates days at local zone midnight, rather than noon GMT. * Second, it is a local number; that is, it depends on the local time * zone. It can be thought of as a single number that encompasses all * the date-related fields. * @stable ICU 2.8 */ UCAL_JULIAN_DAY, /** * Ranges from 0 to 23:59:59.999 (regardless of DST). This field behaves <em>exactly</em> * like a composite of all time-related fields, not including the zone fields. As such, * it also reflects discontinuities of those fields on DST transition days. On a day * of DST onset, it will jump forward. On a day of DST cessation, it will jump * backward. This reflects the fact that it must be combined with the DST_OFFSET field * to obtain a unique local time value. * @stable ICU 2.8 */ UCAL_MILLISECONDS_IN_DAY, /** * Whether or not the current month is a leap month (0 or 1). See the Chinese calendar for * an example of this. */ UCAL_IS_LEAP_MONTH, /* Do not conditionalize the following with #ifndef U_HIDE_DEPRECATED_API, * it is needed for layout of Calendar, DateFormat, and other objects */ #ifndef U_FORCE_HIDE_DEPRECATED_API /** * One more than the highest normal UCalendarDateFields value. * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420. */ UCAL_FIELD_COUNT, #endif // U_FORCE_HIDE_DEPRECATED_API /** * Field number indicating the * day of the month. This is a synonym for <code>UCAL_DATE</code>. * The first day of the month has value 1. * @see #UCAL_DATE * Synonym for UCAL_DATE * @stable ICU 2.8 **/ UCAL_DAY_OF_MONTH=UCAL_DATE }; /** @stable ICU 2.0 */ typedef enum UCalendarDateFields UCalendarDateFields; /** * Useful constant for days of week. Note: Calendar day-of-week is 1-based. Clients * who create locale resources for the field of first-day-of-week should be aware of * this. For instance, in US locale, first-day-of-week is set to 1, i.e., UCAL_SUNDAY. */ /** Possible days of the week in a UCalendar * @stable ICU 2.0 */ enum UCalendarDaysOfWeek { /** Sunday */ UCAL_SUNDAY = 1, /** Monday */ UCAL_MONDAY, /** Tuesday */ UCAL_TUESDAY, /** Wednesday */ UCAL_WEDNESDAY, /** Thursday */ UCAL_THURSDAY, /** Friday */ UCAL_FRIDAY, /** Saturday */ UCAL_SATURDAY }; /** @stable ICU 2.0 */ typedef enum UCalendarDaysOfWeek UCalendarDaysOfWeek; /** Possible months in a UCalendar. Note: Calendar month is 0-based. * @stable ICU 2.0 */ enum UCalendarMonths { /** January */ UCAL_JANUARY, /** February */ UCAL_FEBRUARY, /** March */ UCAL_MARCH, /** April */ UCAL_APRIL, /** May */ UCAL_MAY, /** June */ UCAL_JUNE, /** July */ UCAL_JULY, /** August */ UCAL_AUGUST, /** September */ UCAL_SEPTEMBER, /** October */ UCAL_OCTOBER, /** November */ UCAL_NOVEMBER, /** December */ UCAL_DECEMBER, /** Value of the <code>UCAL_MONTH</code> field indicating the * thirteenth month of the year. Although the Gregorian calendar * does not use this value, lunar calendars do. */ UCAL_UNDECIMBER }; /** @stable ICU 2.0 */ typedef enum UCalendarMonths UCalendarMonths; /** Possible AM/PM values in a UCalendar * @stable ICU 2.0 */ enum UCalendarAMPMs { /** AM */ UCAL_AM, /** PM */ UCAL_PM }; /** @stable ICU 2.0 */ typedef enum UCalendarAMPMs UCalendarAMPMs; /** * System time zone type constants used by filtering zones * in ucal_openTimeZoneIDEnumeration. * @see ucal_openTimeZoneIDEnumeration * @stable ICU 4.8 */ enum USystemTimeZoneType { /** * Any system zones. * @stable ICU 4.8 */ UCAL_ZONE_TYPE_ANY, /** * Canonical system zones. * @stable ICU 4.8 */ UCAL_ZONE_TYPE_CANONICAL, /** * Canonical system zones associated with actual locations. * @stable ICU 4.8 */ UCAL_ZONE_TYPE_CANONICAL_LOCATION }; /** @stable ICU 4.8 */ typedef enum USystemTimeZoneType USystemTimeZoneType; /** * Create an enumeration over system time zone IDs with the given * filter conditions. * @param zoneType The system time zone type. * @param region The ISO 3166 two-letter country code or UN M.49 * three-digit area code. When NULL, no filtering * done by region. * @param rawOffset An offset from GMT in milliseconds, ignoring the * effect of daylight savings time, if any. When NULL, * no filtering done by zone offset. * @param ec A pointer to an UErrorCode to receive any errors * @return an enumeration object that the caller must dispose of * using enum_close(), or NULL upon failure. In case of failure, * *ec will indicate the error. * @stable ICU 4.8 */ U_STABLE UEnumeration* U_EXPORT2 ucal_openTimeZoneIDEnumeration(USystemTimeZoneType zoneType, const char* region, const int32_t* rawOffset, UErrorCode* ec); /** * Create an enumeration over all time zones. * * @param ec input/output error code * * @return an enumeration object that the caller must dispose of using * uenum_close(), or NULL upon failure. In case of failure *ec will * indicate the error. * * @stable ICU 2.6 */ U_STABLE UEnumeration* U_EXPORT2 ucal_openTimeZones(UErrorCode* ec); /** * Create an enumeration over all time zones associated with the given * country. Some zones are affiliated with no country (e.g., "UTC"); * these may also be retrieved, as a group. * * @param country the ISO 3166 two-letter country code, or NULL to * retrieve zones not affiliated with any country * * @param ec input/output error code * * @return an enumeration object that the caller must dispose of using * uenum_close(), or NULL upon failure. In case of failure *ec will * indicate the error. * * @stable ICU 2.6 */ U_STABLE UEnumeration* U_EXPORT2 ucal_openCountryTimeZones(const char* country, UErrorCode* ec); /** * Return the default time zone. The default is determined initially * by querying the host operating system. If the host system detection * routines fail, or if they specify a TimeZone or TimeZone offset * which is not recognized, then the special TimeZone "Etc/Unknown" * is returned. * * The default may be changed with `ucal_setDefaultTimeZone()` or with * the C++ TimeZone API, `TimeZone::adoptDefault(TimeZone*)`. * * @param result A buffer to receive the result, or NULL * * @param resultCapacity The capacity of the result buffer * * @param ec input/output error code * * @return The result string length, not including the terminating * null * * @see #UCAL_UNKNOWN_ZONE_ID * * @stable ICU 2.6 */ U_STABLE int32_t U_EXPORT2 ucal_getDefaultTimeZone(UChar* result, int32_t resultCapacity, UErrorCode* ec); /** * Set the default time zone. * * @param zoneID null-terminated time zone ID * * @param ec input/output error code * * @stable ICU 2.6 */ U_STABLE void U_EXPORT2 ucal_setDefaultTimeZone(const UChar* zoneID, UErrorCode* ec); #ifndef U_HIDE_DRAFT_API /** * Return the current host time zone. The host time zone is detected from * the current host system configuration by querying the host operating * system. If the host system detection routines fail, or if they specify * a TimeZone or TimeZone offset which is not recognized, then the special * TimeZone "Etc/Unknown" is returned. * * Note that host time zone and the ICU default time zone can be different. * * The ICU default time zone does not change once initialized unless modified * by calling `ucal_setDefaultTimeZone()` or with the C++ TimeZone API, * `TimeZone::adoptDefault(TimeZone*)`. * * If the host operating system configuration has changed since ICU has * initialized then the returned value can be different than the ICU default * time zone, even if the default has not changed. * * <p>This function is not thread safe.</p> * * @param result A buffer to receive the result, or NULL * @param resultCapacity The capacity of the result buffer * @param ec input/output error code * @return The result string length, not including the terminating * null * * @see #UCAL_UNKNOWN_ZONE_ID * * @draft ICU 65 */ U_DRAFT int32_t U_EXPORT2 ucal_getHostTimeZone(UChar *result, int32_t resultCapacity, UErrorCode *ec); #endif // U_HIDE_DRAFT_API /** * Return the amount of time in milliseconds that the clock is * advanced during daylight savings time for the given time zone, or * zero if the time zone does not observe daylight savings time. * * @param zoneID null-terminated time zone ID * * @param ec input/output error code * * @return the number of milliseconds the time is advanced with * respect to standard time when the daylight savings rules are in * effect. This is always a non-negative number, most commonly either * 3,600,000 (one hour) or zero. * * @stable ICU 2.6 */ U_STABLE int32_t U_EXPORT2 ucal_getDSTSavings(const UChar* zoneID, UErrorCode* ec); /** * Get the current date and time. * The value returned is represented as milliseconds from the epoch. * @return The current date and time. * @stable ICU 2.0 */ U_STABLE UDate U_EXPORT2 ucal_getNow(void); /** * Open a UCalendar. * A UCalendar may be used to convert a millisecond value to a year, * month, and day. * <p> * Note: When unknown TimeZone ID is specified or if the TimeZone ID specified is "Etc/Unknown", * the UCalendar returned by the function is initialized with GMT zone with TimeZone ID * <code>UCAL_UNKNOWN_ZONE_ID</code> ("Etc/Unknown") without any errors/warnings. If you want * to check if a TimeZone ID is valid prior to this function, use <code>ucal_getCanonicalTimeZoneID</code>. * * @param zoneID The desired TimeZone ID. If 0, use the default time zone. * @param len The length of zoneID, or -1 if null-terminated. * @param locale The desired locale * @param type The type of UCalendar to open. This can be UCAL_GREGORIAN to open the Gregorian * calendar for the locale, or UCAL_DEFAULT to open the default calendar for the locale (the * default calendar may also be Gregorian). To open a specific non-Gregorian calendar for the * locale, use uloc_setKeywordValue to set the value of the calendar keyword for the locale * and then pass the locale to ucal_open with UCAL_DEFAULT as the type. * @param status A pointer to an UErrorCode to receive any errors * @return A pointer to a UCalendar, or 0 if an error occurred. * @see #UCAL_UNKNOWN_ZONE_ID * @stable ICU 2.0 */ U_STABLE UCalendar* U_EXPORT2 ucal_open(const UChar* zoneID, int32_t len, const char* locale, UCalendarType type, UErrorCode* status); /** * Close a UCalendar. * Once closed, a UCalendar may no longer be used. * @param cal The UCalendar to close. * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_close(UCalendar *cal); #if U_SHOW_CPLUSPLUS_API U_NAMESPACE_BEGIN /** * \class LocalUCalendarPointer * "Smart pointer" class, closes a UCalendar via ucal_close(). * For most methods see the LocalPointerBase base class. * * @see LocalPointerBase * @see LocalPointer * @stable ICU 4.4 */ U_DEFINE_LOCAL_OPEN_POINTER(LocalUCalendarPointer, UCalendar, ucal_close); U_NAMESPACE_END #endif /** * Open a copy of a UCalendar. * This function performs a deep copy. * @param cal The calendar to copy * @param status A pointer to an UErrorCode to receive any errors. * @return A pointer to a UCalendar identical to cal. * @stable ICU 4.0 */ U_STABLE UCalendar* U_EXPORT2 ucal_clone(const UCalendar* cal, UErrorCode* status); /** * Set the TimeZone used by a UCalendar. * A UCalendar uses a timezone for converting from Greenwich time to local time. * @param cal The UCalendar to set. * @param zoneID The desired TimeZone ID. If 0, use the default time zone. * @param len The length of zoneID, or -1 if null-terminated. * @param status A pointer to an UErrorCode to receive any errors. * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_setTimeZone(UCalendar* cal, const UChar* zoneID, int32_t len, UErrorCode* status); /** * Get the ID of the UCalendar's time zone. * * @param cal The UCalendar to query. * @param result Receives the UCalendar's time zone ID. * @param resultLength The maximum size of result. * @param status Receives the status. * @return The total buffer size needed; if greater than resultLength, the output was truncated. * @stable ICU 51 */ U_STABLE int32_t U_EXPORT2 ucal_getTimeZoneID(const UCalendar *cal, UChar *result, int32_t resultLength, UErrorCode *status); /** * Possible formats for a UCalendar's display name * @stable ICU 2.0 */ enum UCalendarDisplayNameType { /** Standard display name */ UCAL_STANDARD, /** Short standard display name */ UCAL_SHORT_STANDARD, /** Daylight savings display name */ UCAL_DST, /** Short daylight savings display name */ UCAL_SHORT_DST }; /** @stable ICU 2.0 */ typedef enum UCalendarDisplayNameType UCalendarDisplayNameType; /** * Get the display name for a UCalendar's TimeZone. * A display name is suitable for presentation to a user. * @param cal The UCalendar to query. * @param type The desired display name format; one of UCAL_STANDARD, UCAL_SHORT_STANDARD, * UCAL_DST, UCAL_SHORT_DST * @param locale The desired locale for the display name. * @param result A pointer to a buffer to receive the formatted number. * @param resultLength The maximum size of result. * @param status A pointer to an UErrorCode to receive any errors * @return The total buffer size needed; if greater than resultLength, the output was truncated. * @stable ICU 2.0 */ U_STABLE int32_t U_EXPORT2 ucal_getTimeZoneDisplayName(const UCalendar* cal, UCalendarDisplayNameType type, const char* locale, UChar* result, int32_t resultLength, UErrorCode* status); /** * Determine if a UCalendar is currently in daylight savings time. * Daylight savings time is not used in all parts of the world. * @param cal The UCalendar to query. * @param status A pointer to an UErrorCode to receive any errors * @return TRUE if cal is currently in daylight savings time, FALSE otherwise * @stable ICU 2.0 */ U_STABLE UBool U_EXPORT2 ucal_inDaylightTime(const UCalendar* cal, UErrorCode* status ); /** * Sets the GregorianCalendar change date. This is the point when the switch from * Julian dates to Gregorian dates occurred. Default is 00:00:00 local time, October * 15, 1582. Previous to this time and date will be Julian dates. * * This function works only for Gregorian calendars. If the UCalendar is not * an instance of a Gregorian calendar, then a U_UNSUPPORTED_ERROR * error code is set. * * @param cal The calendar object. * @param date The given Gregorian cutover date. * @param pErrorCode Pointer to a standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * * @see GregorianCalendar::setGregorianChange * @see ucal_getGregorianChange * @stable ICU 3.6 */ U_STABLE void U_EXPORT2 ucal_setGregorianChange(UCalendar *cal, UDate date, UErrorCode *pErrorCode); /** * Gets the Gregorian Calendar change date. This is the point when the switch from * Julian dates to Gregorian dates occurred. Default is 00:00:00 local time, October * 15, 1582. Previous to this time and date will be Julian dates. * * This function works only for Gregorian calendars. If the UCalendar is not * an instance of a Gregorian calendar, then a U_UNSUPPORTED_ERROR * error code is set. * * @param cal The calendar object. * @param pErrorCode Pointer to a standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return The Gregorian cutover time for this calendar. * * @see GregorianCalendar::getGregorianChange * @see ucal_setGregorianChange * @stable ICU 3.6 */ U_STABLE UDate U_EXPORT2 ucal_getGregorianChange(const UCalendar *cal, UErrorCode *pErrorCode); /** * Types of UCalendar attributes * @stable ICU 2.0 */ enum UCalendarAttribute { /** * Lenient parsing * @stable ICU 2.0 */ UCAL_LENIENT, /** * First day of week * @stable ICU 2.0 */ UCAL_FIRST_DAY_OF_WEEK, /** * Minimum number of days in first week * @stable ICU 2.0 */ UCAL_MINIMAL_DAYS_IN_FIRST_WEEK, /** * The behavior for handling wall time repeating multiple times * at negative time zone offset transitions * @stable ICU 49 */ UCAL_REPEATED_WALL_TIME, /** * The behavior for handling skipped wall time at positive time * zone offset transitions. * @stable ICU 49 */ UCAL_SKIPPED_WALL_TIME }; /** @stable ICU 2.0 */ typedef enum UCalendarAttribute UCalendarAttribute; /** * Options for handling ambiguous wall time at time zone * offset transitions. * @stable ICU 49 */ enum UCalendarWallTimeOption { /** * An ambiguous wall time to be interpreted as the latest. * This option is valid for UCAL_REPEATED_WALL_TIME and * UCAL_SKIPPED_WALL_TIME. * @stable ICU 49 */ UCAL_WALLTIME_LAST, /** * An ambiguous wall time to be interpreted as the earliest. * This option is valid for UCAL_REPEATED_WALL_TIME and * UCAL_SKIPPED_WALL_TIME. * @stable ICU 49 */ UCAL_WALLTIME_FIRST, /** * An ambiguous wall time to be interpreted as the next valid * wall time. This option is valid for UCAL_SKIPPED_WALL_TIME. * @stable ICU 49 */ UCAL_WALLTIME_NEXT_VALID }; /** @stable ICU 49 */ typedef enum UCalendarWallTimeOption UCalendarWallTimeOption; /** * Get a numeric attribute associated with a UCalendar. * Numeric attributes include the first day of the week, or the minimal numbers * of days in the first week of the month. * @param cal The UCalendar to query. * @param attr The desired attribute; one of UCAL_LENIENT, UCAL_FIRST_DAY_OF_WEEK, * UCAL_MINIMAL_DAYS_IN_FIRST_WEEK, UCAL_REPEATED_WALL_TIME or UCAL_SKIPPED_WALL_TIME * @return The value of attr. * @see ucal_setAttribute * @stable ICU 2.0 */ U_STABLE int32_t U_EXPORT2 ucal_getAttribute(const UCalendar* cal, UCalendarAttribute attr); /** * Set a numeric attribute associated with a UCalendar. * Numeric attributes include the first day of the week, or the minimal numbers * of days in the first week of the month. * @param cal The UCalendar to set. * @param attr The desired attribute; one of UCAL_LENIENT, UCAL_FIRST_DAY_OF_WEEK, * UCAL_MINIMAL_DAYS_IN_FIRST_WEEK, UCAL_REPEATED_WALL_TIME or UCAL_SKIPPED_WALL_TIME * @param newValue The new value of attr. * @see ucal_getAttribute * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_setAttribute(UCalendar* cal, UCalendarAttribute attr, int32_t newValue); /** * Get a locale for which calendars are available. * A UCalendar in a locale returned by this function will contain the correct * day and month names for the locale. * @param localeIndex The index of the desired locale. * @return A locale for which calendars are available, or 0 if none. * @see ucal_countAvailable * @stable ICU 2.0 */ U_STABLE const char* U_EXPORT2 ucal_getAvailable(int32_t localeIndex); /** * Determine how many locales have calendars available. * This function is most useful as determining the loop ending condition for * calls to \ref ucal_getAvailable. * @return The number of locales for which calendars are available. * @see ucal_getAvailable * @stable ICU 2.0 */ U_STABLE int32_t U_EXPORT2 ucal_countAvailable(void); /** * Get a UCalendar's current time in millis. * The time is represented as milliseconds from the epoch. * @param cal The UCalendar to query. * @param status A pointer to an UErrorCode to receive any errors * @return The calendar's current time in millis. * @see ucal_setMillis * @see ucal_setDate * @see ucal_setDateTime * @stable ICU 2.0 */ U_STABLE UDate U_EXPORT2 ucal_getMillis(const UCalendar* cal, UErrorCode* status); /** * Set a UCalendar's current time in millis. * The time is represented as milliseconds from the epoch. * @param cal The UCalendar to set. * @param dateTime The desired date and time. * @param status A pointer to an UErrorCode to receive any errors * @see ucal_getMillis * @see ucal_setDate * @see ucal_setDateTime * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_setMillis(UCalendar* cal, UDate dateTime, UErrorCode* status ); /** * Set a UCalendar's current date. * The date is represented as a series of 32-bit integers. * @param cal The UCalendar to set. * @param year The desired year. * @param month The desired month; one of UCAL_JANUARY, UCAL_FEBRUARY, UCAL_MARCH, UCAL_APRIL, UCAL_MAY, * UCAL_JUNE, UCAL_JULY, UCAL_AUGUST, UCAL_SEPTEMBER, UCAL_OCTOBER, UCAL_NOVEMBER, UCAL_DECEMBER, UCAL_UNDECIMBER * @param date The desired day of the month. * @param status A pointer to an UErrorCode to receive any errors * @see ucal_getMillis * @see ucal_setMillis * @see ucal_setDateTime * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_setDate(UCalendar* cal, int32_t year, int32_t month, int32_t date, UErrorCode* status); /** * Set a UCalendar's current date. * The date is represented as a series of 32-bit integers. * @param cal The UCalendar to set. * @param year The desired year. * @param month The desired month; one of UCAL_JANUARY, UCAL_FEBRUARY, UCAL_MARCH, UCAL_APRIL, UCAL_MAY, * UCAL_JUNE, UCAL_JULY, UCAL_AUGUST, UCAL_SEPTEMBER, UCAL_OCTOBER, UCAL_NOVEMBER, UCAL_DECEMBER, UCAL_UNDECIMBER * @param date The desired day of the month. * @param hour The desired hour of day. * @param minute The desired minute. * @param second The desirec second. * @param status A pointer to an UErrorCode to receive any errors * @see ucal_getMillis * @see ucal_setMillis * @see ucal_setDate * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_setDateTime(UCalendar* cal, int32_t year, int32_t month, int32_t date, int32_t hour, int32_t minute, int32_t second, UErrorCode* status); /** * Returns TRUE if two UCalendars are equivalent. Equivalent * UCalendars will behave identically, but they may be set to * different times. * @param cal1 The first of the UCalendars to compare. * @param cal2 The second of the UCalendars to compare. * @return TRUE if cal1 and cal2 are equivalent, FALSE otherwise. * @stable ICU 2.0 */ U_STABLE UBool U_EXPORT2 ucal_equivalentTo(const UCalendar* cal1, const UCalendar* cal2); /** * Add a specified signed amount to a particular field in a UCalendar. * This can modify more significant fields in the calendar. * Adding a positive value always means moving forward in time, so for the Gregorian calendar, * starting with 100 BC and adding +1 to year results in 99 BC (even though this actually reduces * the numeric value of the field itself). * @param cal The UCalendar to which to add. * @param field The field to which to add the signed value; one of UCAL_ERA, UCAL_YEAR, UCAL_MONTH, * UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, UCAL_DATE, UCAL_DAY_OF_YEAR, UCAL_DAY_OF_WEEK, * UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_AM_PM, UCAL_HOUR, UCAL_HOUR_OF_DAY, UCAL_MINUTE, UCAL_SECOND, * UCAL_MILLISECOND, UCAL_ZONE_OFFSET, UCAL_DST_OFFSET. * @param amount The signed amount to add to field. If the amount causes the value * to exceed to maximum or minimum values for that field, other fields are modified * to preserve the magnitude of the change. * @param status A pointer to an UErrorCode to receive any errors * @see ucal_roll * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_add(UCalendar* cal, UCalendarDateFields field, int32_t amount, UErrorCode* status); /** * Add a specified signed amount to a particular field in a UCalendar. * This will not modify more significant fields in the calendar. * Rolling by a positive value always means moving forward in time (unless the limit of the * field is reached, in which case it may pin or wrap), so for Gregorian calendar, * starting with 100 BC and rolling the year by +1 results in 99 BC. * When eras have a definite beginning and end (as in the Chinese calendar, or as in most eras in the * Japanese calendar) then rolling the year past either limit of the era will cause the year to wrap around. * When eras only have a limit at one end, then attempting to roll the year past that limit will result in * pinning the year at that limit. Note that for most calendars in which era 0 years move forward in time * (such as Buddhist, Hebrew, or Islamic), it is possible for add or roll to result in negative years for * era 0 (that is the only way to represent years before the calendar epoch). * @param cal The UCalendar to which to add. * @param field The field to which to add the signed value; one of UCAL_ERA, UCAL_YEAR, UCAL_MONTH, * UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, UCAL_DATE, UCAL_DAY_OF_YEAR, UCAL_DAY_OF_WEEK, * UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_AM_PM, UCAL_HOUR, UCAL_HOUR_OF_DAY, UCAL_MINUTE, UCAL_SECOND, * UCAL_MILLISECOND, UCAL_ZONE_OFFSET, UCAL_DST_OFFSET. * @param amount The signed amount to add to field. If the amount causes the value * to exceed to maximum or minimum values for that field, the field is pinned to a permissible * value. * @param status A pointer to an UErrorCode to receive any errors * @see ucal_add * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_roll(UCalendar* cal, UCalendarDateFields field, int32_t amount, UErrorCode* status); /** * Get the current value of a field from a UCalendar. * All fields are represented as 32-bit integers. * @param cal The UCalendar to query. * @param field The desired field; one of UCAL_ERA, UCAL_YEAR, UCAL_MONTH, * UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, UCAL_DATE, UCAL_DAY_OF_YEAR, UCAL_DAY_OF_WEEK, * UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_AM_PM, UCAL_HOUR, UCAL_HOUR_OF_DAY, UCAL_MINUTE, UCAL_SECOND, * UCAL_MILLISECOND, UCAL_ZONE_OFFSET, UCAL_DST_OFFSET. * @param status A pointer to an UErrorCode to receive any errors * @return The value of the desired field. * @see ucal_set * @see ucal_isSet * @see ucal_clearField * @see ucal_clear * @stable ICU 2.0 */ U_STABLE int32_t U_EXPORT2 ucal_get(const UCalendar* cal, UCalendarDateFields field, UErrorCode* status ); /** * Set the value of a field in a UCalendar. * All fields are represented as 32-bit integers. * @param cal The UCalendar to set. * @param field The field to set; one of UCAL_ERA, UCAL_YEAR, UCAL_MONTH, * UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, UCAL_DATE, UCAL_DAY_OF_YEAR, UCAL_DAY_OF_WEEK, * UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_AM_PM, UCAL_HOUR, UCAL_HOUR_OF_DAY, UCAL_MINUTE, UCAL_SECOND, * UCAL_MILLISECOND, UCAL_ZONE_OFFSET, UCAL_DST_OFFSET. * @param value The desired value of field. * @see ucal_get * @see ucal_isSet * @see ucal_clearField * @see ucal_clear * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_set(UCalendar* cal, UCalendarDateFields field, int32_t value); /** * Determine if a field in a UCalendar is set. * All fields are represented as 32-bit integers. * @param cal The UCalendar to query. * @param field The desired field; one of UCAL_ERA, UCAL_YEAR, UCAL_MONTH, * UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, UCAL_DATE, UCAL_DAY_OF_YEAR, UCAL_DAY_OF_WEEK, * UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_AM_PM, UCAL_HOUR, UCAL_HOUR_OF_DAY, UCAL_MINUTE, UCAL_SECOND, * UCAL_MILLISECOND, UCAL_ZONE_OFFSET, UCAL_DST_OFFSET. * @return TRUE if field is set, FALSE otherwise. * @see ucal_get * @see ucal_set * @see ucal_clearField * @see ucal_clear * @stable ICU 2.0 */ U_STABLE UBool U_EXPORT2 ucal_isSet(const UCalendar* cal, UCalendarDateFields field); /** * Clear a field in a UCalendar. * All fields are represented as 32-bit integers. * @param cal The UCalendar containing the field to clear. * @param field The field to clear; one of UCAL_ERA, UCAL_YEAR, UCAL_MONTH, * UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, UCAL_DATE, UCAL_DAY_OF_YEAR, UCAL_DAY_OF_WEEK, * UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_AM_PM, UCAL_HOUR, UCAL_HOUR_OF_DAY, UCAL_MINUTE, UCAL_SECOND, * UCAL_MILLISECOND, UCAL_ZONE_OFFSET, UCAL_DST_OFFSET. * @see ucal_get * @see ucal_set * @see ucal_isSet * @see ucal_clear * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_clearField(UCalendar* cal, UCalendarDateFields field); /** * Clear all fields in a UCalendar. * All fields are represented as 32-bit integers. * @param calendar The UCalendar to clear. * @see ucal_get * @see ucal_set * @see ucal_isSet * @see ucal_clearField * @stable ICU 2.0 */ U_STABLE void U_EXPORT2 ucal_clear(UCalendar* calendar); /** * Possible limit values for a UCalendar * @stable ICU 2.0 */ enum UCalendarLimitType { /** Minimum value */ UCAL_MINIMUM, /** Maximum value */ UCAL_MAXIMUM, /** Greatest minimum value */ UCAL_GREATEST_MINIMUM, /** Leaest maximum value */ UCAL_LEAST_MAXIMUM, /** Actual minimum value */ UCAL_ACTUAL_MINIMUM, /** Actual maximum value */ UCAL_ACTUAL_MAXIMUM }; /** @stable ICU 2.0 */ typedef enum UCalendarLimitType UCalendarLimitType; /** * Determine a limit for a field in a UCalendar. * A limit is a maximum or minimum value for a field. * @param cal The UCalendar to query. * @param field The desired field; one of UCAL_ERA, UCAL_YEAR, UCAL_MONTH, * UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, UCAL_DATE, UCAL_DAY_OF_YEAR, UCAL_DAY_OF_WEEK, * UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_AM_PM, UCAL_HOUR, UCAL_HOUR_OF_DAY, UCAL_MINUTE, UCAL_SECOND, * UCAL_MILLISECOND, UCAL_ZONE_OFFSET, UCAL_DST_OFFSET. * @param type The desired critical point; one of UCAL_MINIMUM, UCAL_MAXIMUM, UCAL_GREATEST_MINIMUM, * UCAL_LEAST_MAXIMUM, UCAL_ACTUAL_MINIMUM, UCAL_ACTUAL_MAXIMUM * @param status A pointer to an UErrorCode to receive any errors. * @return The requested value. * @stable ICU 2.0 */ U_STABLE int32_t U_EXPORT2 ucal_getLimit(const UCalendar* cal, UCalendarDateFields field, UCalendarLimitType type, UErrorCode* status); /** Get the locale for this calendar object. You can choose between valid and actual locale. * @param cal The calendar object * @param type type of the locale we're looking for (valid or actual) * @param status error code for the operation * @return the locale name * @stable ICU 2.8 */ U_STABLE const char * U_EXPORT2 ucal_getLocaleByType(const UCalendar *cal, ULocDataLocaleType type, UErrorCode* status); /** * Returns the timezone data version currently used by ICU. * @param status error code for the operation * @return the version string, such as "2007f" * @stable ICU 3.8 */ U_STABLE const char * U_EXPORT2 ucal_getTZDataVersion(UErrorCode* status); /** * Returns the canonical system timezone ID or the normalized * custom time zone ID for the given time zone ID. * @param id The input timezone ID to be canonicalized. * @param len The length of id, or -1 if null-terminated. * @param result The buffer receives the canonical system timezone ID * or the custom timezone ID in normalized format. * @param resultCapacity The capacity of the result buffer. * @param isSystemID Receives if the given ID is a known system * timezone ID. * @param status Receives the status. When the given timezone ID * is neither a known system time zone ID nor a * valid custom timezone ID, U_ILLEGAL_ARGUMENT_ERROR * is set. * @return The result string length, not including the terminating * null. * @stable ICU 4.0 */ U_STABLE int32_t U_EXPORT2 ucal_getCanonicalTimeZoneID(const UChar* id, int32_t len, UChar* result, int32_t resultCapacity, UBool *isSystemID, UErrorCode* status); /** * Get the resource keyword value string designating the calendar type for the UCalendar. * @param cal The UCalendar to query. * @param status The error code for the operation. * @return The resource keyword value string. * @stable ICU 4.2 */ U_STABLE const char * U_EXPORT2 ucal_getType(const UCalendar *cal, UErrorCode* status); /** * Given a key and a locale, returns an array of string values in a preferred * order that would make a difference. These are all and only those values where * the open (creation) of the service with the locale formed from the input locale * plus input keyword and that value has different behavior than creation with the * input locale alone. * @param key one of the keys supported by this service. For now, only * "calendar" is supported. * @param locale the locale * @param commonlyUsed if set to true it will return only commonly used values * with the given locale in preferred order. Otherwise, * it will return all the available values for the locale. * @param status error status * @return a string enumeration over keyword values for the given key and the locale. * @stable ICU 4.2 */ U_STABLE UEnumeration* U_EXPORT2 ucal_getKeywordValuesForLocale(const char* key, const char* locale, UBool commonlyUsed, UErrorCode* status); /** Weekday types, as returned by ucal_getDayOfWeekType(). * @stable ICU 4.4 */ enum UCalendarWeekdayType { /** * Designates a full weekday (no part of the day is included in the weekend). * @stable ICU 4.4 */ UCAL_WEEKDAY, /** * Designates a full weekend day (the entire day is included in the weekend). * @stable ICU 4.4 */ UCAL_WEEKEND, /** * Designates a day that starts as a weekday and transitions to the weekend. * Call ucal_getWeekendTransition() to get the time of transition. * @stable ICU 4.4 */ UCAL_WEEKEND_ONSET, /** * Designates a day that starts as the weekend and transitions to a weekday. * Call ucal_getWeekendTransition() to get the time of transition. * @stable ICU 4.4 */ UCAL_WEEKEND_CEASE }; /** @stable ICU 4.4 */ typedef enum UCalendarWeekdayType UCalendarWeekdayType; /** * Returns whether the given day of the week is a weekday, a weekend day, * or a day that transitions from one to the other, for the locale and * calendar system associated with this UCalendar (the locale's region is * often the most determinant factor). If a transition occurs at midnight, * then the days before and after the transition will have the * type UCAL_WEEKDAY or UCAL_WEEKEND. If a transition occurs at a time * other than midnight, then the day of the transition will have * the type UCAL_WEEKEND_ONSET or UCAL_WEEKEND_CEASE. In this case, the * function ucal_getWeekendTransition() will return the point of * transition. * @param cal The UCalendar to query. * @param dayOfWeek The day of the week whose type is desired (UCAL_SUNDAY..UCAL_SATURDAY). * @param status The error code for the operation. * @return The UCalendarWeekdayType for the day of the week. * @stable ICU 4.4 */ U_STABLE UCalendarWeekdayType U_EXPORT2 ucal_getDayOfWeekType(const UCalendar *cal, UCalendarDaysOfWeek dayOfWeek, UErrorCode* status); /** * Returns the time during the day at which the weekend begins or ends in * this calendar system. If ucal_getDayOfWeekType() returns UCAL_WEEKEND_ONSET * for the specified dayOfWeek, return the time at which the weekend begins. * If ucal_getDayOfWeekType() returns UCAL_WEEKEND_CEASE for the specified dayOfWeek, * return the time at which the weekend ends. If ucal_getDayOfWeekType() returns * some other UCalendarWeekdayType for the specified dayOfWeek, is it an error condition * (U_ILLEGAL_ARGUMENT_ERROR). * @param cal The UCalendar to query. * @param dayOfWeek The day of the week for which the weekend transition time is * desired (UCAL_SUNDAY..UCAL_SATURDAY). * @param status The error code for the operation. * @return The milliseconds after midnight at which the weekend begins or ends. * @stable ICU 4.4 */ U_STABLE int32_t U_EXPORT2 ucal_getWeekendTransition(const UCalendar *cal, UCalendarDaysOfWeek dayOfWeek, UErrorCode *status); /** * Returns TRUE if the given UDate is in the weekend in * this calendar system. * @param cal The UCalendar to query. * @param date The UDate in question. * @param status The error code for the operation. * @return TRUE if the given UDate is in the weekend in * this calendar system, FALSE otherwise. * @stable ICU 4.4 */ U_STABLE UBool U_EXPORT2 ucal_isWeekend(const UCalendar *cal, UDate date, UErrorCode *status); /** * Return the difference between the target time and the time this calendar object is currently set to. * If the target time is after the current calendar setting, the the returned value will be positive. * The field parameter specifies the units of the return value. For example, if field is UCAL_MONTH * and ucal_getFieldDifference returns 3, then the target time is 3 to less than 4 months after the * current calendar setting. * * As a side effect of this call, this calendar is advanced toward target by the given amount. That is, * calling this function has the side effect of calling ucal_add on this calendar with the specified * field and an amount equal to the return value from this function. * * A typical way of using this function is to call it first with the largest field of interest, then * with progressively smaller fields. * * @param cal The UCalendar to compare and update. * @param target The target date to compare to the current calendar setting. * @param field The field to compare; one of UCAL_ERA, UCAL_YEAR, UCAL_MONTH, * UCAL_WEEK_OF_YEAR, UCAL_WEEK_OF_MONTH, UCAL_DATE, UCAL_DAY_OF_YEAR, UCAL_DAY_OF_WEEK, * UCAL_DAY_OF_WEEK_IN_MONTH, UCAL_AM_PM, UCAL_HOUR, UCAL_HOUR_OF_DAY, UCAL_MINUTE, UCAL_SECOND, * UCAL_MILLISECOND, UCAL_ZONE_OFFSET, UCAL_DST_OFFSET. * @param status A pointer to an UErrorCode to receive any errors * @return The date difference for the specified field. * @stable ICU 4.8 */ U_STABLE int32_t U_EXPORT2 ucal_getFieldDifference(UCalendar* cal, UDate target, UCalendarDateFields field, UErrorCode* status); /** * Time zone transition types for ucal_getTimeZoneTransitionDate * @stable ICU 50 */ enum UTimeZoneTransitionType { /** * Get the next transition after the current date, * i.e. excludes the current date * @stable ICU 50 */ UCAL_TZ_TRANSITION_NEXT, /** * Get the next transition on or after the current date, * i.e. may include the current date * @stable ICU 50 */ UCAL_TZ_TRANSITION_NEXT_INCLUSIVE, /** * Get the previous transition before the current date, * i.e. excludes the current date * @stable ICU 50 */ UCAL_TZ_TRANSITION_PREVIOUS, /** * Get the previous transition on or before the current date, * i.e. may include the current date * @stable ICU 50 */ UCAL_TZ_TRANSITION_PREVIOUS_INCLUSIVE }; typedef enum UTimeZoneTransitionType UTimeZoneTransitionType; /**< @stable ICU 50 */ /** * Get the UDate for the next/previous time zone transition relative to * the calendar's current date, in the time zone to which the calendar * is currently set. If there is no known time zone transition of the * requested type relative to the calendar's date, the function returns * FALSE. * @param cal The UCalendar to query. * @param type The type of transition desired. * @param transition A pointer to a UDate to be set to the transition time. * If the function returns FALSE, the value set is unspecified. * @param status A pointer to a UErrorCode to receive any errors. * @return TRUE if a valid transition time is set in *transition, FALSE * otherwise. * @stable ICU 50 */ U_STABLE UBool U_EXPORT2 ucal_getTimeZoneTransitionDate(const UCalendar* cal, UTimeZoneTransitionType type, UDate* transition, UErrorCode* status); /** * Converts a system time zone ID to an equivalent Windows time zone ID. For example, * Windows time zone ID "Pacific Standard Time" is returned for input "America/Los_Angeles". * * <p>There are system time zones that cannot be mapped to Windows zones. When the input * system time zone ID is unknown or unmappable to a Windows time zone, then this * function returns 0 as the result length, but the operation itself remains successful * (no error status set on return). * * <p>This implementation utilizes <a href="http://unicode.org/cldr/charts/supplemental/zone_tzid.html"> * Zone-Tzid mapping data</a>. The mapping data is updated time to time. To get the latest changes, * please read the ICU user guide section <a href="http://userguide.icu-project.org/datetime/timezone#TOC-Updating-the-Time-Zone-Data"> * Updating the Time Zone Data</a>. * * @param id A system time zone ID. * @param len The length of <code>id</code>, or -1 if null-terminated. * @param winid A buffer to receive a Windows time zone ID. * @param winidCapacity The capacity of the result buffer <code>winid</code>. * @param status Receives the status. * @return The result string length, not including the terminating null. * @see ucal_getTimeZoneIDForWindowsID * * @stable ICU 52 */ U_STABLE int32_t U_EXPORT2 ucal_getWindowsTimeZoneID(const UChar* id, int32_t len, UChar* winid, int32_t winidCapacity, UErrorCode* status); /** * Converts a Windows time zone ID to an equivalent system time zone ID * for a region. For example, system time zone ID "America/Los_Angeles" is returned * for input Windows ID "Pacific Standard Time" and region "US" (or <code>null</code>), * "America/Vancouver" is returned for the same Windows ID "Pacific Standard Time" and * region "CA". * * <p>Not all Windows time zones can be mapped to system time zones. When the input * Windows time zone ID is unknown or unmappable to a system time zone, then this * function returns 0 as the result length, but the operation itself remains successful * (no error status set on return). * * <p>This implementation utilizes <a href="http://unicode.org/cldr/charts/supplemental/zone_tzid.html"> * Zone-Tzid mapping data</a>. The mapping data is updated time to time. To get the latest changes, * please read the ICU user guide section <a href="http://userguide.icu-project.org/datetime/timezone#TOC-Updating-the-Time-Zone-Data"> * Updating the Time Zone Data</a>. * * @param winid A Windows time zone ID. * @param len The length of <code>winid</code>, or -1 if null-terminated. * @param region A null-terminated region code, or <code>NULL</code> if no regional preference. * @param id A buffer to receive a system time zone ID. * @param idCapacity The capacity of the result buffer <code>id</code>. * @param status Receives the status. * @return The result string length, not including the terminating null. * @see ucal_getWindowsTimeZoneID * * @stable ICU 52 */ U_STABLE int32_t U_EXPORT2 ucal_getTimeZoneIDForWindowsID(const UChar* winid, int32_t len, const char* region, UChar* id, int32_t idCapacity, UErrorCode* status); #ifndef U_HIDE_DRAFT_API /** * Day periods * @draft Apple */ typedef enum UADayPeriod { UADAYPERIOD_MORNING1, UADAYPERIOD_MORNING2, UADAYPERIOD_AFTERNOON1, UADAYPERIOD_AFTERNOON2, UADAYPERIOD_EVENING1, UADAYPERIOD_EVENING2, UADAYPERIOD_NIGHT1, UADAYPERIOD_NIGHT2, UADAYPERIOD_MIDNIGHT, /* Should only get this for formatStyle TRUE */ UADAYPERIOD_NOON, /* Should only get this for formatStyle TRUE */ UADAYPERIOD_UNKNOWN } UADayPeriod; /** * Get the locale-specific day period for a particular time of day. * This comes from the dayPeriod CLDR data in ICU. * * @param locale * The locale * @param hour * Hour of day, in range 0..23. * @param minute * Minute of the hour, in range 0..59. Currently does not affect dayPeriod * selection if formatStyle is FALSE. * @param formatStyle * FALSE to get dayPeriods for selecting strings to be used "stand-alone" * without a particular time of day, e.g. "Good morning", "Good afternoon", * "Good evening". * TRUE to get dayPeriods for selecting strings to be used when formatting * a particular time of day, e.g. "12:00 noon", "3:00 PM". * @param status * A pointer to a UErrorCode to receive any errors. In-out parameter; if * this indicates an error on input, the function will return immediately. * @return * The UADayPeriod (possibly UADAYPERIOD_UNKNOWN). * @draft Apple */ U_DRAFT UADayPeriod U_EXPORT2 uacal_getDayPeriod( const char* locale, int32_t hour, int32_t minute, UBool formatStyle, UErrorCode* status ); #endif /* U_HIDE_DRAFT_API */ #endif /* #if !UCONFIG_NO_FORMATTING */ #endif